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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArray/prototype/at/returns-undefined-for-out-of-range-index.js | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/at/returns-undefined-for-out-of-range-index.js b/js/src/tests/test262/built-ins/TypedArray/prototype/at/returns-undefined-for-out-of-range-index.js new file mode 100644 index 0000000000..8a954e3971 --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArray/prototype/at/returns-undefined-for-out-of-range-index.js @@ -0,0 +1,30 @@ +// Copyright (C) 2020 Rick Waldron. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-%typedarray%.prototype.at +description: > + Returns undefined if the specified index less than or greater than the available index range. +info: | + %TypedArray%.prototype.at( index ) + + If k < 0 or k ≥ len, then return undefined. + +includes: [testTypedArray.js] +features: [TypedArray,TypedArray.prototype.at] +---*/ +assert.sameValue( + typeof TypedArray.prototype.at, + 'function', + 'The value of `typeof TypedArray.prototype.at` is "function"' +); + +testWithTypedArrayConstructors(TA => { + assert.sameValue(typeof TA.prototype.at, 'function', 'The value of `typeof TA.prototype.at` is "function"'); + let a = new TA([]); + + assert.sameValue(a.at(-2), undefined, 'a.at(-2) must return undefined'); // wrap around the end + assert.sameValue(a.at(0), undefined, 'a.at(0) must return undefined'); + assert.sameValue(a.at(1), undefined, 'a.at(1) must return undefined'); +}); + +reportCompare(0, 0); |